MCQ Subject: Input Output & Machine Input

Which machine input device is typically used in libraries and retail stores to quickly read and enter product or book information encoded in a series of parallel lines?

A machine processes a sequence of numbers as follows: Input: 1, 2, 3, 4, 5; Output: 1, 4, 9, 16, 25. If the input is 6, 7, 8, 9, 10, what will be the output?

A machine inputs a sequence of numbers as follows: 3, 6, 12, 24, __. What is the next number in the sequence if the machine doubles the previous number and adds the position of the number in the sequence (starting from 1)?

A machine arranges numbers based on two rules: it alternates between adding 4 and adding 6, starting with adding 4 to the initial number 10. If the sequence starts as 10, 14, 20, 26, 32, what is the next number in the sequence?

In a data processing scenario for SBI’s customer database, which input method is most suitable for entering a large number of fixed-format account details (e.g., account numbers, PINs) into the system?

Three operators, X, Y, and Z, can input 100 records in 10, 12, and 15 minutes respectively. If they work simultaneously on the same task, which of the following best describes their combined efficiency in records per minute?

A machine sorts boxes into three categories (A, B, C) based on two rules applied in sequence: 1. If a box weighs more than 5kg, it goes to A; otherwise, to B or C. 2. If a box is red, it goes to C unless it was sent to A by rule 1. Given boxes X (6kg, blue), Y (4kg, red), Z (3kg, green), and W (7kg, red), what is the final sorting?

In a machine input scenario, 10 items are arranged in a line from left to right as A, B, C, D, E, F, G, H, I, J. First, the items are rotated to the right by 3 positions, then the new first item is moved to the end. Where will item ‘D’ be after these operations?

A computer program is designed to process a list of 1000 items based on their priority (High, Medium, Low) and then by their alphabetical order. If the program encounters an equal number of ‘High’ and ‘Medium’ priority items, and no ‘Low’ priority items, how will the output list primarily be ordered after processing?

Rahul can type a document in 12 minutes, and Rohan can type the same document in 15 minutes. How long will it take them to type the document together?